The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 18, 2005
Filed:
Nov. 08, 2002
Toshikazu Yabe, Kanagawa, JP;
Soichiro Kato, Gunma, JP;
Hiroki Yamaguchi, Saitama, JP;
Tatsunobu Momono, Kanagawa, JP;
Juntaro Sahara, Kanagawa, JP;
Hirotoshi Aramaki, Kanagawa, JP;
Toshikazu Yabe, Kanagawa, JP;
Soichiro Kato, Gunma, JP;
Hiroki Yamaguchi, Saitama, JP;
Tatsunobu Momono, Kanagawa, JP;
Juntaro Sahara, Kanagawa, JP;
Hirotoshi Aramaki, Kanagawa, JP;
NSK.Ltd., Tokyo, JP;
Abstract
A linear-motion device has: a linear-motion element fitted on a shaft which moves straight along the shaft; a plurality of balls which are retained in a ball groove formed on the inner side of the linear-motion element and roll over between the ball groove and the shaft; a separator interposed between the balls; and, a circulating path formed in the linear-motion element through which the balls are circulated from one end of the ball groove to the other, which is filled with a grease, wherein the separator is a formed product comprising as a resin component a polybutylene naphthalate-based elastomer formed by a hard segment made of a polybutylene naphthalate and a soft segment made of a polycondensate of 2,6-naphthalanedicarboxylic acid with a polytetramethylene ether glycol.